Power Supply PS1000-A6-24.20
Dielectric Strength
20
21
-1
1
31
21
Dielectric Strength
The output voltage is floating and has no ohmic connection to the ground.
The output is insulated to the input by a double or reinforced insulation.
Type and routine tests are conducted by the manufacturer. Field tests may be conducted
in the field using the appropriate test equipment which applies the voltage with a slow ramp
(2s up and 2s down). Connect all input-terminals together as well as all output poles before
conducting the test. When testing, set the cut-off current settings to the value in the table
below.
We recommend that either the (+) pole or the (-) pole shall be connected to the protective earth
system. This helps to avoid situations in which a load starts unexpectedly or can
not be switched off when unnoticed earth faults occur.
Figure 21.1 Dielectric strength
B*) When testing input to DC-OK ensure that the max. voltage between DC-OK and the output is not exceeded
(column D). We recommend connecting DC-OK pins and the output pins together when performing the test.
A
B
C
D
Type test
60s
2 500Vac
3 000Vac
1 000Vac
500Vac
Factory test
5s
2 500Vac
2 500Vac
500Vac
500Vac
Field test
5s
2 000Vac
2 000Vac
500Vac
500Vac
Field test cut-off current
settings
> 10mA
> 10mA
> 20mA
> 1mA
